Soot and grease extractor



July 23, 1929. J. A. M CARTHY 3 SCOT AND GREASE EXTRACTOR Filed April 22, 1927 IIH (9 v I3 3 i q Patented as 23, 1929.

ii N l T E D St l III? JOSEPH A. MCCARTHY, OF JAMAICA, NEW YORK.

8001 AND GREASE EXTRACTOR.

Application filed April 22, 1927. Serial No. 185,816.

The inventor, being familiar with flue construction and the means for extracting soot and grease from flue gases, has seen the necessity for making an improvement over the specific invention described and claimed in his existing patent No. 1,620,266, dated March 8th, 1927. Heretofore soot and grease extractors for gas ranges, have had the filtering material traversing the bore of the flue, and said material therefore'sooner or later becomes clogged and causes congestion in the flue, with the attending danger of a carbon monoxide gas being given off from the gas range due to incomplete combustion.

This invention relates to a means for extracting soot and grease from flue gases by leading same through a collar on top of which is supported a curved or sector shaped hood with filtering material supported in and against the curved wall of the hood. All

. particles from the ascending grease and soot laden vapors impinge on the filtering material, the hot gases escaping after depositing said soot and grease in the filtering material. This construction is an absolute guarantee against flue congestion because the clogging up of the filtering material would in no way interfere with combustion or the circulation of air or gases in the flue.

With the above objects in view, the invention consists essentially in the arrangement and construction of parts hereinafter more particularly described and later pointed out in the appended claims, reference being had to the accompanying drawing in which:

Figure 1 is a front elevational view of a soot and grease extracting means embodying this invention;

Figure 2 is a side elevational view thereof;

Figure 3 is a vertical section of the device shown in Figure 1, taken on line 33 of Figure 4; and

I Figure at is a vertical section taken on line 4-4 of Figure 3.

Referring to the drawing, the invention comprises a collar 3 adapted to be fitted at its lower end on the flue outlet flange or vent 3 ofa cooking stove 3 and on the upper end of which is mounted a sector-shaped or i curved hood 1, having an inturned flange 11 on the front edges of the side and top walls thereof. The hood is joined to the collar 3 by a pin 7 which extends through the opening 8 in the rear lower end of the curved wall of q the hood and through the openings 10 in the .ment of the strips.

upper ends of the front and rear walls of the collar 3, as well as into a transverse recess 9 provided in the lower end of a depending lug 6. The lug 6 is formed on the forward top portion of the curved wall of the hood directly at the inner or rear side of and slightly spaced from the flange 11, the lower end of said lug terminating near the lower end of the hood to have the rear edge thereof flatly engage the front wall of the collar 3 with the recess 9 registered with the adjacent opening 10. Resilient metal strips 5 are disposed near the sides and in the back of the hood with their upper ends at the rear side of the upper horizontal portion of the flange 11 and with their lower ends engaged with the upper end of the rear wall of the collar 3,

whereby said strips are held in place and retained sprung into rearwardly curved form to extend across the side portions of the mat of filtering material 4 to removably hold the latter in place against the curved wall of the hood. The lower ends of the strips 5 are slitted longitudinally as at 12 to straddle the upper end of the rear wall of the collar and thereby guard against accidental displace- A suitable grille or perforated plate 2 covers the open front or outlet of-the hood, the same being held in place against the rear side of the flange 11 by the abutting upper ends of the strips 5, and the resilient rearwardly and upwardly directed flange 13 provided on the lower edge of the grille and pressing rearwardly against the lower end of the lug 6. The grille is spaced from the front wall of the collar to permit entrance of air or outlet for excess products of combustion as clearly shown in Fig. 8.

In some forms of the invention the hood may be attached directly to the oven vent where same is on top of oven which has been the construction of gas ranges since their invention. However,'in 1925 gas range manufacturers discovered that a range could be made with the oven vent in the rear and this departure from a structure that had been in Vogue since the inception of gas ranges caused considerable trouble to the housewife and none of the devices in the art of grease arrestors and the like were adaptable to the construction. It was then that the applicant devised a means of overcoming this difliculty in the structure herewith. The oven outlet being-in the rear, it necessitated extending the curved hood by adding an extension of a pipe collar and this is the construction of the device for which this application is made.

I claim:

1. A flue for gas ranges and the like comprising a collar adapted to be attached on the flue vent of a gas range, a curved hood mounted on top of said collar and having an outlet, a pin extending through the top of the collar and the bottom of the hood to,secure them together, filtering material in the curve of the hood, and spring strips support ing said filtering material.

2. A flue for gas ranges and the like comprising a collar adapted to be attached on the flue vent of a gas range, a curved hood mounted on top of said collar and having an inwardly directed flange on the front edges of its sideand top walls, a lug rigid with and depending from the top of the hood beh1nd said flange, and a grille disposed against the inner side of the flange and having a rearwardly and upwardly turned resilient flange on its lower edge pressing rearwardly against the lower end of said lug.

3. A structure as specified in claim 2, 1n combination with a securing pin passing through the collar and hood and projecting into the lower end of said lug.

4. A flue according to claim 2, in combination with spaced resilient strips arranged in the back of the hood ahd held under tension in rearwardly curved form with their upper ends impinged against the top of the grille and their lower ends engaged with the back wall of the collar.

5. A flue according to claim 2, in combination with spaced resilient strips arranged in the back of the hood and held under tension in rearwardly' curved form with their upper ends impinged against the top of the grille and their lower ends engaged with the back I wall of the collar, and a mat of filtering material disposed in the back of the hood, said strips-extending across the mat to hold it in place.

6. A flue for gas ranges and the like comprising a collar adapted to be attached on the flue vent of a gas range, a curved hood mounted on top of said collar and having an inwardly directed flange on the front edges of the side and top walls, a lug rigid with and depending from the top of the hood behind said flange, agrille disposed against the inner side of the flange and having a rearwardly and upwardly turned resilient flange on its lower edge pressing rearwardly against the lower end of said lug and a securing pin passing through the collar and hood.

7. A soot and grease remover for gas ranges comprising a collar adapted to be attached to the flue vent of the gas range, a curved hood mounted on said collar, and filtering material disposed against the inner curved side of the hood.

8. A soot and grease remover for gas ranges comprising a collar adapted to be attached to the flue vent of a gas range, a curved hoodmounted on said collar, and a lining of filtering material contacting only the curved side of the hood in the direction of flow of gases to be impinged by the gases flowing through the hood.

9. A flue for gas ranges and the like comprising a collar adapted to be attached on the line vent of a gas range, a curved hood mount ed on the top of said collar, said hood extending beyond the collar at one side with an opening in the front side of the hood and a bottom opening in the hood extension at one side of the collar, the area of the front side and bottom opening in the hood extension being substantially equal to the transverse area of the collar.

10. A flue for gas ranges and the like comprising a collar adapted to be attached on' the flue vent of a gas range, a curved hood mounted on the top of said collar, said hood extending beyond the collar at one side with an opening in the front side of the hood, and a bottom opening in the hood extension, the area of the front side and bottom openings in the hood extension being substantially equal to the transverse areaof the collar.

11. A flue for gas ranges and the like comprising a collar, a curved hood attached to the upper end of the collar, said hood having top and side walls extending beyond one side of the collar with front and bottom openings in the extension.

12. A flue for gas ranges and the like comprising a curved hood to cooperate with the oven vent collar of a combustion chamber, said hood having a continuously curved top wall and an opening in the hood extendin upwardly from the lower edge of the hood and at an angle to the lower edge of the hood with the lower edge spaced upwardly of the top of the gas range.

13. A soot and grease remover for gas no ranges comprising means adapted to be mounted on the flue vent of the gas range and having an outlet opening at an angle to the passage through the flue vent, and-filter material in saidmeans above and rearwardly only 115 of said opening.

14. A flue for gas ranges and the like comprising a collar adapted to be attached on the flue vent of a gas range, a hood on the collar having an opening at an angle to the passage 120 through the flue vent and said hood having filtering material therein at one side thereof to be impinged by gases passing therethrough.

15. A flue for gas ranges and the like com prising a curved hood mounted for communication with the flue vent of a gas range, said hood having its lower edge disposed upwardly of the top wall of the gas range and having an outlet area at an angle to and parallel with the plane of the opening of the flue vent. 13

16. A flue for as ranges and the like comthe openings spaced upwardly of the top of prising a curved hood mounted for communithe gas range. cation with the flue vent of a gas-range, said Signed in Jamaica, in the county of Queens, 10 hood having outlet openings, one parallel State of New York, this 21st day of April,

5 with the plane of the flue vent opening and A. D., 1927.

the other being at an angle to the opening of the flue vent with the edges of the walls of JOSEPH A. MCCARTHY. 

